Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
050074lightly pollutedexcellent111excellent
040059goodexcellent81excellent
030046goodexcellent71excellent
020046goodexcellent61excellent
010042goodexcellent51excellent
000039goodexcellent51excellent
230032goodexcellent51excellent
220037goodexcellent51excellent
210028goodexcellent41excellent
200026goodexcellent31excellent
190016excellentexcellent31excellent
180012excellentexcellent21excellent
170011excellentexcellent22excellent
160012excellentexcellent21excellent
150018excellentexcellent31excellent
140014excellentexcellent31excellent
130011excellentexcellent21excellent
120015excellentexcellent21excellent
110014excellentexcellent21excellent
100018excellentexcellent21excellent
090017excellentexcellent21excellent
080015excellentexcellent21excellent
070011excellentexcellent11excellent
060011excellentexcellent11excellent